Oil burner



Feb. 25, 1947. A 2,416,383

on, BURNER Filed March 4, 1944 INVENTOR. FRANCO/5 1/. Burma PatentedFeb. 25, 1947 UNITED STATES PATENT OFFICE OIL BURNER Francois UldctgeDumas, Spencer, Mass.

Application March 4, 1944, Serial No. 524,990

3 Claims.

Objects of the invention include the provision of a novel and improvedoil burner including an improved means for priming, comprising an oilreservoir located adjacent to a device which will quickly preheat theoil; the provision of an improved oil burner including an interiorheating chamber which will preheat the oil prior to burning and willthus improve the action of the burner and economy in burning; and theprovision of a more economical oil burner providing novel means for airintake and increasing the air directed to the fiame area. 1

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 isa vertical section through a device according to the invention;

Fig. 2 is a detail perspective view of a modification thereof;

Fig. 3 is a view similar to Fig. 2 showing a further modification.

In the drawings the reference character Ill represents a support onwhich the oil burner is to be mounted and this is accomplished bysecuring a circular sheet metal skirt I2 to the support. I

provide a bottom element M which includes a depending part 96 providinga chamber I8 for the oil and which is connected to the oil reservoir bymeans of a pipe 29. A ball arrangement 22 is provided for use inmounting the'bottom element It on a stand or bracket.

The chamber I 3 extends vertically and opens into a cup-shaped reservoirat 24 formed by the interior surface of the bottom element I 4. The oilwill be fed upwards tothe point of vaporization along the entire surfaceof the interior of element I4 and will be guided by a sheet metalelement 26 which has a shape conforming to the cup-shape of element I 4.The element 26 is spaced from element I 4 to provide the passage 28 forthe oil. Element 26 is raised as shown at 39 to provide a reservoir forthe oil for a purpose to be described, it being understood that elementM and element 2% are circular in shape, and a vent 3! is provided;

At the upper limit of the element I4, I provide a circular channel 32which may contain a wick if desired. The element 26 terminates in aflange 34 which supports a cylindrical closed element 36, the latterbeing open at the bottom and closed at the top by a plate 38. Plate 38is supported on the element 36 as shown, and independently mounts aperforated cylinder 40 which extends down and stops just short of theopening of chamber 28 as is clearly shown in Fig. 1, An exteriorperforated cylinder 42 is mounted on ele ment It by means of a shoulder44 and the cylinder 42 is closed at the top by a perforated plate it.The skirt I2 is secured to the exterior of cylinder 52 as shown in Fig.l and is larger than the diameter of element I4, being bent in at'itstop as at E8 to be secured. This arrangement provides that an air draftwill be directed from the bottom of the burner directly to thecombustion zone at the exterior of element I4, the draft beingrestricted to enter between cylinders 42 and M9, since the skirt I2 andelement I4 are imperforate. This draft enters the space betweencylinders 40 and 62 through a series of holes 50. Centrally of plate 38I provide a cylinder 52 which depends therefrom and extends lower thanthe other cylinders, stopping just short of the upper part of the bulge3B for the purpose of preheating oil located within this bulge.

In the operation of the burner the best draft possible will be inducedbetween skirt I2 and the element 54 and this draft will be directedexactly to the point of burning of the oil. The oil is led up throughchamber 23 and issues in vaporized state under the lower edge ofcylinder lll, The imperforate cylinder 36 will obviously become heatedto a high degree and will cause the cup-shaped chamber formed by element26 to be highly heated whereby the oil in chamber 28 will become quicklypreheated increasing the vaporization and economy in. burning oil. Inaddition, the central cylinder 52 will cause the same effect to anincreased degree and the heat in cylinder 52 will be directed to thebulge 30 thus increasing the heating of the oil contained therein. Theconstruction above described will greatly contribute to economy ofburning of the oil and will also contribute to ease in maintaining theburner in good operating condition. The

modification of Fig. 2 dispenses with channel 32 and instead providesair channels 54 leading from the air draft between skirt I2 and elementI4 directly to the oil vaporizing area so that the Wick may be dispensedwith and the draft increased.

Fig. 3 is a modification of the Fig. 2 device and provides in additionto the construction there shown a series of oil receiving recesses 56which are connected by a channel or the like 58 for passage of the oilfrom recess to recess.

The construction of Figs. 2 and 3 Will provide suflicient air so thatthe wick is notnecessary, the issuing oil being immediately vaporizedand burned and for this reason it may be that in some 3 instances itwill be convenient to dispense with holes 511 and secure skirt H2 at apoint 60 as shown in Fig, 3,'thus forcing all the air up throughpassages 54, This construction may be used in either the case of Fig, 2or Fig. 3.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed, otherwise than asset forth in the claims, but what I claim is:

1. An oil burner structure comprising a base element in the shape of acup, a cup-shaped ele-- ment interiorly of the base element and spacedtherefrom to provide a passage for oil between said elements, oil inletmeans in the base element to supply oil to said passage, anupstanding'pen forated cylinder on the base element, a coaxialperforated cylinder of smaller diameter mounted with the lower edgethereof between and slightly spaced from the base element and the secondnamed element, 9, depending imperforate skirt surrounding the baseelement in spaced relation thereto, and secured adjacent to the loweredge'of the first named cylinder to provide an air chame ber between theskirt and base element, said burner structure being provided with airpassages from the air chamber to the space between the two perforatedcylinders.

2. An oil burner structure comprising a base element in the shape of acup, a cup-shaped ele ment interiorly of the base element and spacedtherefrom to provide a passage for oil between said elements, oil inletmeans in the base element to supply oil to said passage, an upstandingperforated cylinder on the base element, a coaxial perforated cylinderof smaller diameter mounted 5 with the lower edge thereof between andslightly spaced from the base element and the second named element, adepending imperforate skirt surrounding the base element in spacedrelation thereto, and secured adjacent to the lower edge of the firstnamed cylinder to provide an air chamber between the skirt and baseelement, the base member being provided with air pas-sages from the airchamber to the space between the two perforated cylinders.

3. An oil burner structure comprising a base element in the shape of acup, 3, cup-shaped element interiorly of the base element and spacedtherefrom to provide a passage for oil between,

said elements, oil inlet means in the base element to supply oil to saidpassage, an upstanding perforated cylinder on the base element, acoaxial perforated cylinder of smaller diameter mounted with the loweredge thereof between and slightly spaced from the base element and thesecond named element, a depending imperforate skirt surrounding the baseelement in spaced relation thereto, and secured adjacent to the loweredge of the first named cylinder to provide an air chamber between theskirt and base element,

the wall of the first named cylinder being provided with air passagesfrom the air chamber to the space between the two perforated cylinders.

FRANCOIS ULDEGE DUMAS.

a'srEaENpns CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 497,459 Ruppel May 16, 1893479,690 Wilder et a1 July 26, 1892 525,038 Wilder et a1 Aug. 28, 1894669,303 Glazier Mar. 5, 1901 1,439,186 Mummery Dec. 19, 1922 1,764,? 94Johnson et al June 17, 1930 2,040,298 Douglas May 12, 1936 2,047,303Albree July 14, 1936 2,055,462 Baker et a1 Sept. 29, 1936 2,123,085Winsor et al July 5, 1938 625,124 Ruppel May 16, 1899 1,365,005 MackayJan. 11, 1921 1,961,072 Newberry et a1 May 29, 1934 FOREIGN PATENTSNumber Country Date 158,320 Austrian Mar. 26, 1940

